2003 saab 9-3 a/c blowing hot

50

Asked by Sep 03, 2013 at 12:20 AM about the 2003 Saab 9-3 Arc

Question type: Maintenance & Repair

my saab 9-3 a/c is blowing hot air refrigerant is good, compressor just randomly starts
and stops working ....unpluged dryer sensor and re-pluge it in and a/c worked one entire
day...the next day it started cutting off again.....please help Florida is hot!

9 Answers

how do you know that "refrigerant is good"? if it were low things like icing would happen...if overcharged there would be insufficient heat- exchange...actually sounds like a blower problem to me....does your blower work on all speeds? the compressor is probably charge sensitive and is not enough charge in there to keep it running~

the expansion valve is a frequently overlooked item when charging the coolant..up to 15psi or whatever the recommended charge is....may be restricting flow here, causing the compressor to "dead head" and shut down~...just a theory...take it and ask about the expansion valve~

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50

Took it to shop to check freeon level

1 out of 1 people think this is helpful.
50

I'll ask

1 out of 1 people think this is helpful.

thanks...was a Heating/Refrigeration guy in 1982...'cept the owner was beating his wife...was ugly and quit from there...but did learn a thing or two about air conditioning tho~

50

And yes it blows at all speeds

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50

That's crazy....I'm worried its going to be an obscure electrical problem...seems to be a common issue from reading forms but no one post how they fixed it,

1 out of 1 people think this is helpful.

I kinda figured, but was covering the bases....these troublesome systems are supposed to be "hermetically sealed" which is impossible with a rotating input shaft...dynamic pressurized seals are not keen, if someone could make them magnetically coupled we'd have a TRUE hermetically sealed system which would need NO refrigerant maintenance...think of your fridge....is easy to seal up around two wires...but a rotating shaft offers a whole new dimension to failures~

50

Yes sir..

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